[Linux-cluster] Moving Physical extents from one PV to another in a clustered environement.

[Hugo Lombard]

On Wed, Dec 12, 2012 at 01:10:39PM -0500, Nicolas Ross wrote:
> Short question : How do I do it ?
> 
> Longer explainaition : We got a VG with 5 PV located on a Fiber channel
> raid enclosure that is used to host GFS partiions among other things. I
> would like to move the extent for on LV from on PV to another within the
> same VG.
> 
> When trying to do pvmove -n LVName oldPV newPV, I get :
> 
> Cannot move in clustered VG VGa, clustered mirror (cmirror) not detected
> and LVs are activated non-exclusively.
> 
> (VGa is my VG).
> 
> So, I suppose I need to activate exclusively the LV to do so ? Is it
> safe to do it with clvmd ?
> 

AFAICR on CentOS 5 I had to install cmirror and the applicable
kmod-cmirror, make sure the cmirror service was started, and then pvmove
did it's thing.

-- 
Hugo Lombard